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QA/QC rapid lead times without compromising on quality

Quality Assurance

Parts Delivered at Rapid Lead Times
Without Compromising on Quality

98.3% parts shipped
on time or early
98.8% parts delivered
to spec or better
Full in process and 100%
outgoing QC checks



Company Culture That Emphasizes Quality

With all processes under one roof, a fully equipped QC zone and a professionally trained quality engineering team on-site, we hope to bring you part quality peace of mind on every single order.

Company culture that emphasises quality

Visit our facility

Drop by our UK headquarters in Leeds or visit our manufacturing facility in Shenzhen, China. Whether it’s because you’re in the area or would like to carry out a supplier audit, we are always here to put your mind at ease.

Virtual Tour


At HLH, we understand how critical information security is, especially when working with high-value IP design. We ensure confidentiality across the entirety of your order. Contact your Account Manager or to submit or request a non-disclosure agreement.

NDA Form

Quality Reports

All parts 100% QC inspected before shipping. Full dimensional report done based on your engineering drawing, we are also able to cater for FAI, PPAP, or other industry specific requirements.

Sample Report

Resolving Quality Issues

Should your order not meet specifications, you will be able to raise any issues within 7 business days of receiving your parts. Your project manager will resolve these issues as quickly as possible.

Contact Us

Steps Involved in Making Your Rapid Parts

Drawings Received
Design Review and DFM
Engineering & Process plan
In-Process Checks
Post Process Dimension Checks
Final Checks
Packaging and Shipping
Second QC Check on UK Imports
HLH Helps WAVE Bring a Reliable Drowning Detection Device to the Market HLH Helps WAVE Bring a Reliable Drowning Detection Device to the Market HLH Helps WAVE Bring a Reliable Drowning Detection Device to the Market

HLH Helps WAVE Bring a Reliable Drowning Detection Device to the Market

HLH injection moulds reliable drowning detection device.

HLH Delivers Fully Assembled Robot (Made of 70 CNC Parts) in Just 2 Weeks

Produced over 70 individual CNC machined parts and assembled the robot and controller in 2 weeks.

HLH Changes The Prototyping Scene For Joost Engines

HLH supplies CNC machined and SLM 3D printed prototypes for Joost Engine's super lightweight outboard.

View Case Studies


  • Stage One: Full DFM at time of quotation by highly experienced engineers. They will highlight any problem areas or make suggestions for changes.
  • Stage Two: incoming inspection of materials with our own PIM Spectrometer
  • Stage Three: Full QC inspection and report before shipping

All projects are DDU unless otherwise stated. This means the quote includes all freight and charges to a port of your choice. Any and all import and other taxes in your country are your own responsibility. If you require different shipping terms these can be negotiated on a case by case basis.

If the parts reach you and for whatever reason you are not satisfied you should notify HLH within 7 days of receiving the parts and we will replace or rework for free.